| ??? 04/28/08 07:10 Read: times |
#154079 - Misinterpreting Responding to: ???'s previous message |
Raghunathan said:
- And why did I try inputting into a Push-Pull ? There is this note on the Silabs F020 data sheet :
"Note that the state of a Port I/O pin can always be read from its associated Data register regardless of whether that pin has been assigned to a digital peripheral or behaves as GPIO." I got mislead by the above. All that they are telling you is that you can read-back the state of the pin; but a push-pull output will always be driving the pin hard to a '1' or hard to a '0' - so you can't have anything else driving into that pin! It's just like the standard 8051 quasi-bidirectional structure: the input will always read-back the state of the pin - but, if the 8051 is driving it low, nothing else connected to that pin can make it high (not without blowing something up, at least) |
| Topic | Author | Date |
| Silabs C8051F020 and LCD busy bit | 01/01/70 00:00 | |
| of course, it don't | 01/01/70 00:00 | |
| Pushpull... | 01/01/70 00:00 | |
| Problem solved | 01/01/70 00:00 | |
| Misinterpreting | 01/01/70 00:00 | |
| Another one on the Silabs IDE.. | 01/01/70 00:00 | |
| SiLabs to Keil | 01/01/70 00:00 | |
| post this in the SILabs forum | 01/01/70 00:00 | |
| editor is not keil | 01/01/70 00:00 | |
| never used it, but .... | 01/01/70 00:00 | |
ASS U ME | 01/01/70 00:00 | |
| my very reason for not doing the push-pull | 01/01/70 00:00 |